N007181  Straight, with lock, 18.5cm straight
N007201  Straight, with lock, 20cm straight
N007231  Straight, with lock, 23cm straight
N007251  Straight, with lock, 25cm straight

N017181  Curved, with lock, 18.5cm elbow
N017201  Curved, with lock, 20cm elbow
N017231  Curved, with lock, 23cm elbow
N017251  Curved, with lock, 25cm elbow